Polishing-machine.



J. P. MARONI. POLISHING MACHINE. APPLICATION FILED MAY 20, 1912.

Patented Sept/10, 1912.

5 SHEETS-SHEET 1.

INVENTOI? Joseph F. Mar-uni WITNESSES anomms J. F. MARONI. POLISHING MACHINE. APPLICATION FILED MAY 20, 1912.

Patented Sept. 10, 1912.

5 SHEETS-SHEET 2.

Rm 8 u m 0 W H NF N EU u V m w v F a H h% MW 0 J J. F. MARONI.

POLISHING MACHINE.

APPLICATION FILED MAY 20, 1912.

1,038,404. Patented Sept. 10,1912.

5 SHEETS-SHEET 3.

ATTORNEYS J. F. MARONI. POLISHING MACHINE.

APPLICATION FILED MAY 20,-1912.

Patented Sept. 10, 1912.

5 SHEETS-SHEET 5.

WITNESSES {3 INVENTOR ATTORYNEYS I To all whom it may concern UNITED STATES PATENT osuiof.

JOSEPH F. MARONI, OF MONTPELIER, VERMONT.

' roh'rsnme-mecrimn.

Be it known that I, JOSEPH F. MARONI, a citizen of the United States, and a resident of Montpelier, in the county of Washington and State of Vermont, have invented a new and Improved PolishingrMachine v of which the following is a full," clear, and jexact description.

This invention relates to machinery for treating or dressing stone, such as granite or marble, or for the treatment of. other materials of a corresponding nature' The invention has for its primary object to improve this typeof machinery with respect to universality of movement and operation whereby practically all hand power is obviated in carrying on extensive operations. The invention consists in the construction and combination of parts to be more fully described hereinafte and particularly set forth in the claims. 7

Reference is to be. had to the accompanying drawings forming a part of this specification in which like characters of reference indicate corresponding parts in all the views, and in which- Figure 1 is a side elevation of a preferred embodiment of this invention; Fig. 2 is a plan view of the same; Fig. 3 is an end. elevation as would appear looking toward the left in Fig. 1; Figs d and 5 are respectively front and end elevations of one'of -the polishing units described below; Figs, 6'and 7 are fragmentary details of an adjustable bridge construction; and Fig-8 is a diagram representing the circuit of the endless power cable.

Referring particularly to" the general views in Figs. 1 to 3,'*I. have "shown'a subv vided thereby applicable especially in connection with the corner posts, thelchannels end being. At 17 is .in-

by maximum strength may be derived in proportion to the mass and ftp eth c addi tional reason that uiding means" are proof the respective posts at each di', :ted toward each other. dicated what may-be termed a bridge comprising front and rear beams 18 and 19 held in parallel spaced relation in any suitable manner and constituting track-ways upon which one or more pollshing units or trolleys 20 and 21 will operate longitudinally of the entire apparatus. 'gether with all the The bridge 17, toparts carried thereby,

I Specification of Letters Patent. Patented Sept. 19, 1912. p

"a nesia; filed May 20,- 1912. Serial in). 698,473.

may be shifted or adjusted transversely of the framework by any suitable means, being supported for such lateral adjustment, ,as

illustrated between and upon pairs of upper and lower rails 22 and 23, each pair of said rails being guided within the aforesaid facing channels of each pair of end posts of the main frame. The said pairs of rails 22 and 23 may be supported vertically by any suitable means, the means shown bein a set of vertical screws 2-1, one of the-sc'r ws beinglocated adjacent each corner of the frame.

One or the other or both of said. rails 22-and 23, preferably the latter, will be provided with threads corresponding to the threads of the screws, whereby there will be provided positive support of the rails and bridge upon said screws. means for simultaneous uniform rotation of said screws, the entire bridge and supporting means may be adjusted vertically in addition to the aforesaid lateral adjustment of the bridge and the longitudinal movement of the trolleysv upon the bridge.

By providing.

The means indicated for imparting the simultaneous movement to the screws consists of a pair of .shaftsQZi arranged transversely. of the main frame and along the transversestringers 15 and 16 and having miter gear connection with the upper ends of the respective screws. At the rear ends of the shafts 25 are connected worm wheels 26.driven by worms 27 mounted upon a lon-' 'gitudnial shaft 28 adjacent the stringer 14 and on which is a gear '29 in mesh with a' pinion 30 adapted tobe left stationary or to be driven in either direction by means of frictiongearin indicated byfil and including a shifting ar or yoke 32. for. determin- 32 is provided with rack teeth and is adapt.- ed to be operated bf); a pinion 33 on the upper end of a. she v34 extendingdownwardly in proximity S lined toisaid shaft w ich the said shaft maybe driven froma horizontal Shaft 36 adapted to be rotated .in'

either direction by one or more hand wheels to the. corner 'post'm. 34 is agear 35 through mg the operation of said pinion. The'bar ts. 37. The rotation of the shaft 36, therefore,,=.

will cause t 'e 'shiftable members of the 'friction gearing 31 to drive in alternation the aforesaid pinion 30, whereby the said pinion and screw operating shafts will be operated from a short shaft 38 upon which is mounted a pulley 39 over which operates an endless power cable 40 which is understood to be driven constantly in a certain direction from a pulley 41, in turn driven in any suitable mannerfrom a motor Mindicated c011- ventionally and which may be located at any convenient distance from the machine and protected from the operating elementsby any suitable means. Power from the motor is shown as transmitted through a pulley 42 moun ed upon the same shaft as thecable pulley 41. 41 indicates a suitable form of tightener for the cable. The means for shifting the bridge laterally along the bars 22 and 23 is shown as comprising a pair of racks 23 carried by the bars 23 and with which cooperate apair of' pinions 23 mounted upon a longitudinal shaft 43 located for convenience upon the beam 18 of the bridge. At one end of said shaft 43' is a worm wheel 44- meshing with a worm 45 connected to a transverse shaft 46 adapted to be driven in either direction by a friction wheel 47 through the cooperationof one or the other of the friction Wheels 48 mounted slidablyupon the shaft 46. Said wheels 48 may be shifted by a yoke 49 to which are connected a pair of bell cranks 50 adapted to be operated by hand operated rods 51 located for convenience upon opposite sides of the bridge. The friction wheel 47 is driven constantly through a pulley 52. It

'Will be apparent that the wheel47 by engagementwith one or the other of the friction wheels48 will cause the bridge to travel transversely of the main frame in one direction or the other at a comparatively low speed.

The aforesaid polishing units 20 and 21 each comprise a trolley which, as indicated in Figs. 4 and 5, preferably includes a frame 53 of any suitable substantial nature. Mounted transversely in the frame 53 are axles 54 and 55, at least one of which mav be regarded as a driving axle for the trolley. The axles are provided with rollers or wheels 56 which operate upon the bridge beams 18 and 19. Said beams may be provided with renewable wear plates 18' and 19', if desirable. The axle 55 may be driven by any suitable means, the means shown being a friction wheel 57 connected toa. ver tical shaft 58 having a shiftable clutch connection at 59 with a cable pulley 60 in the circuit of the aforesaid cable 40. The said friction wheel 57 is disposed between the friction wheels 61 and may be free therefrom or may be caused to drive said wheels (31 in alternation upon shifting said wheels (31 along a shaft 62 which they are adapted to drive. The shaft (39 is arranged so as to which will be drive the shaft through high or low speed gears 63 and 64 respectively, either of said sets of gears being adapted to be operated in either direction in accordance with the adjustment of the friction wheels 61. Said friction wheels may be adjusted through a yoke in connection with a shaft 65, and the of the bridge may attend to the aforesaid manipulations. At 71 is indicated an idler pulley journaled on a slightly inclinedaxis in the trolley frame 53 and whose function is to guide the power cable 40 and increase its traction on the driven pulleys. Connected to the shaft 58 at its upper end is a pinion 72 meshing with a gear 73 mounted upon a substantially central shaft 74 to the lower end of which is connected a scroll 75 preferably through a universal joint or knuckle 76. By-this means the scroll will be given a continuous rotation through the power cable 40 through the pulley 1'5'0 lnffll positions of adjustment of the trolley and bridge. Additional guide pulleys for the cable 50 areshown at 22 22", and 22 journaled adjacent the ends of the bars 22 and 23, and at 22 and 22 on the adjacent end of the bridge.

The operation of the machine may be briefly described as follows :Assnming that the power cable ,40 is running, the bridge and supporting cross beams, therefore, may be elevated by rotation of the transverse shaft 36 in the proper direction. This will permit the operatorsto place the work in position as indicated at W upon any suitable platform or support S. A reverse rotation of said shaft 36 will then result in the lowering. of the bridge, bringing the scrolls into operative engagement with the work. At such time the'frlction gearing 31 may be thrown out of gear. Vliile the scrolls are rotating it is usually desirable to cause the trolleys to traverse the bridge done, as herein set forth, by manipulation first of the shaft (38 and then the manipulation of the shafts 65 and 67 according to the direction and-speed at which the trolleys are to be operated along the bridge. While the trolleys are operating longitudinally as just described, or atany other time, the entire bridgemay be shifted laterally by virtue of the racks '23 and pinions 23 as a result of the shifting of either of the rods 51. Assuming that'the machine is set up complete and the cable 40 is running, the brid e may be brought to one side while a bed of stones is being pre- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

bridge may be moved over the bed and the scrolls brought into contact with the work and started to operate as above described.

-hile the scrolls are engaged on the bed,

set as described above, the crane may be preparing another bed on the other side, and when one bed is completed the bridge is moved over to the other bed, and so on, one bed being always ready for the machine. The shifting of the bridge laterally while the trolleysare traveling longitudinally is desirable.

The several parts of the machine may be made of any suitable materials, and the relative sizes and proportions thereof may be varied to a large extent without departing from the spirit of the invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a polishing machine, the combination of a main frame, pairs of parallel transverse horizontal bars movably guided in the frame for vertical adjustment, a bridge supported by and between the re.- spective pairs of said bars and movable along the same longitudinally thereof and transversely of the main frame, a trolley supported upon and movable longitudinally along said bridge, polishing devices carried by said trolley, and a power driven end-less cable-adapted to operate all ofthe aforesaid movable devices.

I 2. In a polishing machine, the combination of a main frame having vertical cor- .ner posts, a screw parallel to and adjacent each of said posts, pairs of horizontal bars supported iipon and adjustable vertically by means of said screws, polishing means supported fupon and adjustable la terally and longitudinally of the frame by means of said-bars, means for operating the polishing means continuously, and means for rotating said screws from said power means, the screw operating means including a set of friction gears and shifting means therefor comprising a horizontal shaft extending ad- .jacent and parallel to one pair of said bars and having means at its opposite ends whereby it may be operated from either side of the polishing means. 3. In a polishing machine, the'combination of a main frame, abridge extending longitudinally thereof'and supported thereon, polishing means supported uponsaid bridge and movable longitudinally thereof, a series of guide pulleys on the bridge and frame, an endless power cable guided over all of said pulleys to operate the polishing means, and means. to shift the bridge laterally with respect to the main frame, said shifting means comprising one of said guide pulleys, a pair of racks, a longitudinal shaft mounted upon, the bridge, a pair of pinions on said shaft meshing with said racks, and

shiftable gearing'between said guide pulley and said shaft.

4. In a polishing machine, the combination of a horizontal bridge, a polishing unit supported upon said bridge and movable longitudinally thereof, said unit comprising 'a scroll, a cable pulley, a clutch to establish geared connection between said pulley and scroll, hand. operated means accessible at either side of the unit for operating said clutch, and 'an endless erate said pulley.

5. In a polishing machine, the combination of a horizontal bridge, a polishing unit supported upon said bridge. and movable longitudinally thereof, said unit comprising a scroll, a cable pulley, means to propel the power device to opunit along the bridge including shiftable change speed gearing, connections between said pulley and the scroll including a clutch. said gearing and-clutch being operable from eitherside of the unit, and an endless power cable'ilriving said .cable pulley.

In testimony whereof I havesigned my name to this specification in the presence of two subscribing witnesses. I

, JOSEPH F. MARONI. Witnesses:

FRANK J. MARTIN, I ALBERT C. LAIRD. 

